Hybrid phase-change plasmonic crystals for active tuning of lattice resonances

Y. G. Chen, Tsung-Sheng Kao, B. Ng, X. Li, X. G. Luo, B. Luk'yanchuk, S. A. Maier, M. H. Hong

Research output: Contribution to journalArticle

92 Scopus citations

Abstract

Tunable lattice resonances are demonstrated in a hybrid plasmonic crystal incorporating the phase-change material Ge2Sb2Te5 (GST) as a 20-nm-thick layer sandwiched between a gold nanodisk array and a quartz substrate. Non-volatile tuning of lattice resonances over a range of about 500 nm (1.89 μm to 2.27 μm) is achieved experimentally via intermediate phase states of the GST layer. This work demonstrates the efficacy and ease of resonance tuning via GST in the near infrared, suggesting the possibility to design broadband non-volatile tunable devices for optical modulation, switching, sensing and nonlinear optical devices.

Original languageEnglish
Pages (from-to)13691-13698
Number of pages8
JournalOptics Express
Volume21
Issue number11
DOIs
StatePublished - 3 Jun 2013

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